CN214134269U - Electric circular saw - Google Patents

Abstract

The utility model relates to an electric saw's field discloses an electric circular saw, and it includes circular saw blade, the rotatory actuating mechanism of drive circular saw blade, casing, base plate and is used for making circular saw blade and the aligning correction mechanism who is cut the line of cut on the work piece, the base plate is connected in one side of casing, and offers the opening that supplies the circular saw blade to wear to establish jointly on base plate and the casing, the circular saw blade extends the casing through the opening part, correction mechanism links to each other with the base plate. This application has the error that the current saw blade cutting direction of assistant operator correction and cutting line, reduces the skew of cutting path, improves the effect of the accuracy nature of cutting.

Description

Electric circular saw

Technical Field

The application relates to the technical field of electric sawing machines, in particular to an electric circular saw.

Background

At present, electric saws are widely used in the fields of civil engineering, machinery, and the like for cutting metals, woods, various polymer materials, and the like. Sawing machines generally use a blade saw, a band saw or a circular saw blade as a tool for sawing and separating the workpiece by means of the movement of the teeth at the edge of the saw blade. The electric circular saw is a tool which takes a motor as power and drives a circular saw blade to rotate through a transmission mechanism for sawing operation, and has the characteristics of safety, reliability, convenience in carrying, high working efficiency and the like.

Chinese utility model with publication number CN202028816U discloses a portable electric saw, including: the cutting machine comprises a main body part with a driving device, a saw blade driven by the driving device of the main body part, a base plate with a lower surface abutting against a cut workpiece, and an illuminating device capable of illuminating the cut part. The main body portion is mounted to the base plate and extends to form a shield that covers a portion of the saw blade that is above the base plate. When cutting a workpiece, an operator marks a cutting line at a position to be cut on the workpiece, and then cuts the workpiece along the cutting line.

In view of the above-mentioned related art, the inventor believes that there is a defect of cutting error because an operator cannot easily perceive a slight deviation of the electric saw and a deviation of a cutting path occurs in a process of cutting a workpiece.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that an operator cannot easily perceive that a small deviation occurs in the electric saw machine in the related art, so that a cutting path deviates, and therefore a cutting error exists, the electric circular saw is provided.

The application provides an electric circular saw adopts following technical scheme to obtain:

the utility model provides an electric circular saw, includes circular saw blade, the rotatory actuating mechanism of drive circular saw blade, casing, base plate and is used for making the circular saw blade and the aligning correction mechanism who is cut the line of cut on the work piece, the one side at the casing is connected to the base plate, just set up the opening that supplies the circular saw blade to wear to establish jointly on base plate and the casing, the circular saw blade extends the casing through the opening part, correction mechanism links to each other with the base plate.

Through the technical scheme, when cutting the work piece, the operator at first draws the line of cut on the work piece plane, adjust the circular saw blade to perpendicular with the work piece plane, then switch on, make actuating mechanism drive the circular saw blade and cut, adjust under correction mechanism's assistance simultaneously, make the circular saw blade align with the line of cut on the work piece all the time, reduce the possibility that the skew takes place in the cutting path of cutting in-process circular saw blade, treat that the circular saw blade is deep into the work piece completely, the base plate pushes forward the base plate and makes the circular saw blade continue the cutting along the line of cut, cutting error has been reduced, the cutting precision has been improved.

Preferably: the correcting mechanism comprises a laser, the laser is connected to the front end of the substrate, and laser emitted by the laser is coplanar with a cutting surface of the circular saw blade.

Through above-mentioned technical scheme, the laser that the laser instrument launches is aligned with the line of cut to make the line of cut on circular saw blade and the work piece align, thereby the circular saw blade cuts along the line of cut all the time during messenger's cutting, has improved the precision of cutting.

Preferably: the laser comprises a substrate, a vertical plate, a clamping groove, a clamping mechanism and a clamping mechanism, wherein the vertical plate is obliquely arranged on one side, close to a shell, of the front end of the substrate, the clamping mechanism is arranged on one side, close to the shell, of the laser, the laser is connected to one side, far away from the shell, of the vertical plate through the clamping mechanism, the clamping mechanism comprises a housing, a plurality of buckles arranged in a sliding mode with the housing and a first spring used for limiting the buckles, the plurality of buckles are arranged at intervals, the housing is fixedly connected to one side, close to the shell, of the laser, the buckles comprise a first split body, a second split body and a protruding portion, the first split body is arranged in the housing in a sliding mode, one end of the first spring is connected with the inner wall of the housing, the other end of the first spring is connected with the first split body, one end of the second split body is vertically connected with the first split body, an opening end is arranged at one end, far away from the laser, and the second split body penetrates through the opening end, and the bulge is fixedly connected with one end of the second split body, which is far away from the first split body, the bulge commonly penetrates through the clamping groove, the bulge is abutted against one side of the vertical plate, which is far away from the housing, and the second split body is propped open and abutted against the inner periphery of the clamping groove.

Through the technical scheme, when the laser needs to be replaced, an operator can close the plurality of second split bodies which are spread, the first split body enables the first spring to be stretched, and then the operator withdraws the buckle from the clamping groove to realize the disassembly of the laser; when installing new laser instrument, the operator kneads a plurality of buckles again and draws close to with buckle embedding draw-in groove, then the operator loosens the buckle, and first spring elasticity resumes, makes a plurality of buckles fix and struts, can realize the installation of laser instrument.

Preferably: the correcting mechanism comprises a movable rod, the movable rod is rotatably arranged at the front end of the base plate, a second spring used for restraining the movable rod is arranged at the front end of the base plate, and the movable rod is coplanar with the circular saw blade.

Through above-mentioned technical scheme, before the cutting, the operator inconsistent the line of cut on activity pole and the work piece, and the circular saw blade aligns with the line of cut this moment to the work piece is cut. In the cutting process, the circular saw blade is deepened perpendicularly along the line of cut, and the interval between movable rod and the work piece shortens for the movable rod is rotatory round the rotation point department between movable rod and the base plate, and contradicts with the work piece plane all the time under the second spring action, makes the conflict point be located the line of cut all the time through adjusting in this process, can guarantee that actual cutting path is unanimous with the line of cut, has improved the accuracy nature of cutting.

Preferably: the movable rod passes through the connecting piece to be connected on the base plate, the connecting piece includes connecting rod and threaded sleeve, the connecting rod is articulated with the base plate front end, the one end that the base plate was kept away from to the connecting rod and the one end that the movable rod is close to the base plate all are equipped with threaded sleeve assorted screw thread, the one end that the base plate was kept away from to the one end that the threaded sleeve is close to the base plate and the one end threaded connection of connecting rod, the other end is close to the one end threaded connection of base plate with the movable rod, second spring one end is connected with one side that the base plate deviates from the casing, and another side is connected with the connecting rod.

Through above-mentioned technical scheme, the movable rod is fixed with the connecting rod with the help of threaded sleeve to can rotate with the connecting rod synchronous. When the movable rod needs to be replaced, an operator can screw down the movable rod through the threads, so that the movable rod is detached; when installing new movable rod, the operator again through the screw thread with new movable rod and threaded sleeve connection, realized the change of movable rod.

Preferably: and a plurality of groups of rollers are arranged on one side of the substrate, which is far away from the shell.

Through the technical scheme, the roller replaces the plane contact of the substrate and the workpiece, and the sliding friction force between the substrate and the workpiece is converted into the rolling friction force when the substrate is pushed forward for cutting, so that the cutting process is more labor-saving.

Preferably: the casing slides and is provided with the protective housing that is used for covering to establish in the saw blade outside, the spout has been seted up along the internal periphery to the casing inboard, the protective housing outside is connected with the slider along the outer peripheral edges, slider and spout cooperation of sliding, the outside and the casing inboard of protective housing are provided with the locating part jointly, the locating part includes first magnet and second magnet, first magnet is located on the casing, second magnet is located on the protective housing, first magnet is used for with the actuation of second magnet.

Through above-mentioned technical scheme, when cutting the work piece, the protective housing receive and releases in the casing, and second magnet adsorbs to be fixed the protective housing on the casing. After the cutting, the operator promotes second magnet, and second magnet drives the slider and slides along the slide rail, covers the part that the circular saw blade exposes the casing completely until the protective housing, has realized saw bit and external isolation, has reduced because of the mistake touches the circular saw blade and has made the injured risk of people when protecting the circular saw blade.

Preferably: the casing all is equipped with the handle in circular saw piece both sides.

Through above-mentioned technical scheme, the handle that both sides all were equipped with can make the operator control the balance of circular saw piece with both hands, reduces the skew of circular saw piece, improves the stability of cutting operation.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the positioning mechanism, an operator can be assisted to correct the error between the current circular saw blade cutting direction and the cutting line, the deviation of a cutting path is reduced, and the cutting accuracy is improved;

2. through the setting of base plate below gyro wheel, turn into rolling friction with sliding friction, can reduce the frictional force of cutting propulsion in-process, improve the efficiency of cutting operation.

Drawings

Fig. 1 is a sectional view of an electric circular saw according to embodiment 1 of the present application in an open state.

Fig. 2 is an overall structural schematic diagram of a closed state of a protective case of an electric circular saw according to embodiment 1 of the present application.

Fig. 3 is an enlarged view of a portion a in fig. 3.

Fig. 4 is an overall structural schematic diagram of an electric circular saw protective case of embodiment 1 of the present application in an open state.

Fig. 5 is a partial schematic view of the clamping mechanism of the electric circular saw according to embodiment 1 of the present application.

Fig. 6 is an overall structural schematic diagram of an electric circular saw protective case of embodiment 2 of the present application in an open state.

Fig. 7 is a sectional view of the electric circular saw according to embodiment 2 of the present application in an open state.

Reference numerals: 1. a circular saw blade; 2. a drive mechanism; 30. a correction mechanism; 3. a laser; 4. a movable rod; 5. a housing; 6. a handle; 7. a chute; 8. a slider; 9. a substrate; 10. a vertical plate; 11. a card slot; 12. a clamping mechanism; 121. a housing; 122. a first spring; 123. buckling; 1231. a first split body; 1232. a second body; 1233. a convex portion; 13. a roller; 14. a protective shell; 15. a limiting member; 151. a first magnet; 152. a second magnet; 16. a connecting member; 161. a threaded sleeve; 162. a connecting rod; 17. a second spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

Example 1

The embodiment of the application discloses an electric circular saw. Referring to fig. 1 and 2, the circular saw blade 1, a driving mechanism 2 for driving the circular saw blade 1 to rotate, a housing 5, and a base plate 9 are included. Casing 5 is the cast iron material, and 5 both sides of casing all extend there is the handle 6 that is used for handheld operation, and actuating mechanism 2 can be the motor that sets up in 5 insides of casing, circular saw blade 1 and the pivot coaxial coupling of motor. When the driving mechanism 2 is powered on, the rotating shaft rotates and drives the circular saw blade 1 to rotate, and the workpiece is cut. Base plate 9 passes through threaded connection mode fixed connection in one side of casing 5, offers the opening that supplies circular saw blade 1 to wear to establish jointly on base plate 9 and the casing 5, and circular saw blade 1 extends casing 5 through the opening part, is equipped with in the casing 5 to cover and locates the protective housing 14 that circular saw blade 1 extends the casing 5 outside partly. The front end of the base plate 9 is also provided with a straightening mechanism 30 for aligning the circular saw blade 1 with the cutting line on the workpiece to be cut, and the side of the base plate 9 facing away from the housing 5 is provided with a roller 13 which can roll on the same plane.

Referring to fig. 1 and 2, the protective housing 14 is a semicircular shell with a diameter smaller than that of the housing 5, the outer side of the protective housing 14 is connected with the sliding block 8 along the outer peripheral edge, the inner side of the housing 5 is provided with the sliding groove 7 along the inner peripheral edge, and the sliding block 8 is in sliding fit with the sliding groove 7.

Referring to fig. 2 and 3, the limiting member 15 is disposed on the outer side of the protective shell 14 and the inner side of the shell 5, and the limiting member 15 includes a first magnet 151 fixedly connected to the shell 5 and a second magnet 152 fixedly connected to the protective shell 14 and rotating with the protective shell 14. When the protective shell 14 is closed, the first magnet 151 and the second magnet 152 are attracted to each other and fixed, so as to limit the movement of the protective shell 14, and at this time, the portion of the circular saw blade 1 exposed out of the housing 5 is isolated from the outside by the protective shell 14.

Referring to fig. 2 and 4, when cutting is performed, the operator pushes the second magnet 152 to separate from the first magnet 151, and the second magnet 152 drives the protective shell 14, so that the sliding block 8 slides along the sliding groove 7. When the protective shell 14 rotates to the inside of the housing 5, the second magnet 152 is attracted to the side of the cast iron housing 5 away from the second magnet 152, and the protective shell 14 is fixed.

Referring to fig. 4, when the circular saw blade 1 is extended vertically so that the base plate 9 approaches the plane of the workpiece, the rollers 13 provided on the side of the base plate 9 facing away from the housing 5 will contact the plane of the workpiece. As the operator pushes forward, the roller 13 rolls along and cooperates with the advancement of the circular saw blade 1 until the cutting of the remaining portion is completed.

Referring to fig. 4 and 5, the correction mechanism 30 includes a laser 3, and the laser 3 emits laser light coplanar with the cutting surface of the circular saw blade 1 and projects a laser spot on the workpiece plane. Before cutting, the operator marks a cutting line on the workpiece plane in advance, and then holds the handles 6 on both sides to adjust the circular saw blade 1 to be perpendicular to the workpiece plane. After starting the cutting, the operator adjusts the direction of travel of the circular saw blade 1 so that the laser spot initially remains coincident with the cutting line, thereby causing the actual cutting path to coincide with the cutting line.

Referring to fig. 4 and 5, a vertical plate 10 is obliquely arranged on one side of the front end of the substrate 9 close to the housing 5, a clamping groove 11 is formed in the vertical plate 10, a clamping mechanism 12 is arranged on one side of the laser 3 close to the housing 5, and the laser 3 is connected to one side of the vertical plate 10 far away from the housing 5 through the clamping mechanism 12.

Referring to fig. 5, the clamping mechanism 12 includes a housing 121, two clips 123 slidably disposed with the housing 121, and a first spring 122 for limiting the clips 123, the clips 123 are oppositely disposed at intervals, and the housing 121 is fixedly connected to one side of the laser 3 close to the housing 5. Clasp 123 includes first and second portions 1231, 1232 and a protruding portion 1233, wherein first and second portions 1231, 1232 and protruding portion 1233 are integrally formed. The first sub-body 1231 is disposed inside the housing 121 and slidably moves along an inner wall of the housing 121, and one end of the first spring 122 is connected to the inner wall of the housing 121 and the other end is connected to the first sub-body 1231. One end of the second sub-body 1232 is vertically connected to the first sub-body 1231. The end of the cover 121 far away from the laser 3 is provided with an open end, the second sub-body 1232 penetrates through the open end, and the protruding portion 1233 is fixedly connected to the end of the second sub-body 1232 far away from the first sub-body 1231.

Referring to fig. 5, the first spring 122 naturally applies a pulling force to the first split body 1231, so that the second split body 1232 abuts against the opening of the housing 121 and the locking groove 11 of the vertical plate 10. The plurality of protruding portions 1233 penetrate through the clamping groove 11 together, and are abutted against one side of the vertical plate 10 departing from the housing 121 under the self-weight action of the laser 3 and the clamping mechanism 12. The plurality of buckles 123 are all arranged in an unfolded mode, so that the laser 3 is fixed on the vertical plate 10, and the laser 3 can work normally. When the laser 3 breaks down and needs to be replaced, the buckle 123 can be shifted to enable the plurality of buckles 123 to be mutually tightened, then the protruding portion 1233 is pushed in the direction perpendicular to the vertical plate 10, the protruding portion 1233 penetrates through the clamping groove 11 in the vertical plate 10, the laser 3 and the clamping mechanism 12 are both separated from the vertical plate 10, and the laser 3 can be conveniently replaced.

The implementation principle of the embodiment 1 is as follows: before cutting the workpiece, the operator marks the cutting line on the plane of the workpiece, and then pushes the second magnet 152 to rotate the protective shell 14. After the protective shell 14 is received in the shell 5, the operator attaches the second magnet 152 to the other side of the cast iron shell 5, adjusts the circular saw blade 1 to be vertical, and turns on the laser 3 to make the laser point projected on the workpiece plane by the laser 3 coincide with the cutting line. Next, the operator turns on the power source to rotate the circular saw blade 1 and vertically penetrate the workpiece. After the roller 13 contacts the workpiece plane, the operator pushes the handle 6 forward to cut the remaining portion of the cutting line. When the laser 3 is out of order and needs to be replaced, an operator can conveniently replace the laser 3 through the clamping mechanism 12.

Example 2

The embodiment of the application discloses an electric circular saw. Referring to fig. 6 and 7, the present embodiment is different from embodiment 1 in that the rectification mechanism 30 includes a link 16, a movable rod 4, and a second spring 17.

Referring to fig. 6 and 7, the connection member 16 includes a connection rod 162 and a threaded sleeve 161, and the connection rod 162 is hinged to the front end of the base plate 9 such that the connection rod 162 can rotate freely. One end of the connecting rod 162 far away from the substrate 9 is provided with a thread matched with the threaded sleeve 161, and one end of the threaded sleeve 161 near the substrate 9 is in threaded connection with one end of the connecting rod 162 far away from the substrate 9, so that the connecting rod 161 can drive the rest part to rotate.

Referring to fig. 6 and 7, the movable rod 4 is coplanar with the cutting surface of the circular saw blade 1, and the end of the movable rod away from the base plate 9 naturally abuts against the plane of the workpiece. Before the cutting starts, the operator adjusts the circular saw blade 1 so that the circular saw blade 1 is perpendicular to the workpiece plane. After the cutting starts, the operator keeps the end of the movable rod 4 away from the base plate 9 to abut against the plane of the workpiece, and the abutting point and the cutting line are coincided all the time, so that the circular saw blade cuts according to the direction of the cutting line. One end of the movable rod 4 close to the base plate 9 is provided with a thread matched with the threaded sleeve 161, and is in threaded connection with one end of the threaded sleeve 161 far away from the base plate 9, so that the movable rod 4 can rotate synchronously with the connecting rod 162.

Referring to fig. 6 and 7, the second spring 17 has one end connected to a side of the base plate 9 facing away from the housing 5 and the other end connected to the connection rod 162. In the cutting process, the movable rod 4 is always pulled by the second spring 17, and along with the circular saw blade 1 vertically going deep into the workpiece, the movable rod 4 rotates around the joint of the connecting rod 162 and the base plate 9 and always keeps abutting against the plane of the workpiece under the traction of the second spring 17.

The implementation principle of the embodiment 2 is as follows: before cutting the workpiece, an operator marks a cutting line on the plane of the workpiece as a reference, and then pushes the second magnet 152 to drive the protective shell 14 to rotate. After the protective shell 14 is put into the shell 5, the operator adsorbs the second magnet 152 to the other side of the cast iron shell 5, then adjusts the circular saw blade 1 to be vertical, and keeps one end of the movable rod 4 far away from the base plate 9 to be abutted against the plane of the workpiece, and the abutted point is always coincided with the cutting line. The operator then turns on the power to rotate the circular saw blade 1. After the circular saw blade 1 is vertically advanced into the workpiece until the rollers 13 contact the plane of the workpiece, the operator can push the handle 6 forward to complete the cut of the remaining portion of the cutting line. When the movable rod 4 needs to be replaced, the operator can unscrew the movable rod 4 through the threads, and then connect a new movable rod 4 with the threaded sleeve 161 through the threads, thereby completing the replacement.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. An electric circular saw, characterized in that: including circular saw blade (1), rotatory actuating mechanism (2) of drive circular saw blade (1), casing (5), base plate (9) and be used for making circular saw blade (1) and cut line alignment's on the work piece correctional agency (30) by the cutting, one side at casing (5) is connected in base plate (9), just offer the opening that supplies circular saw blade (1) to wear to establish jointly on base plate (9) and casing (5), casing (5) are extended through opening part in circular saw blade (1), correctional agency (30) link to each other with base plate (9).

2. The electric circular saw of claim 1, wherein: the correcting mechanism (30) comprises a laser (3), the laser (3) is connected to the front end of the base plate (9), and laser emitted by the laser (3) is coplanar with the cutting surface of the circular saw blade (1).

3. The electric circular saw as claimed in claim 2, wherein: the laser comprises a base plate (9), wherein a vertical plate (10) is obliquely arranged on one side, close to a shell (5), of the front end of the base plate (9), a clamping groove (11) is formed in the vertical plate (10), a clamping mechanism (12) is arranged on one side, close to the shell (5), of the laser (3), the laser (3) is connected to one side, far away from the shell (5), of the vertical plate (10) through the clamping mechanism (12), the clamping mechanism (12) comprises a housing (121), a plurality of buckles (123) which are arranged in a sliding mode with the housing (121) and a first spring (122) used for limiting the buckles (123), the plurality of buckles (123) are arranged at intervals, the housing (121) is fixedly connected to one side, close to the shell (5), of the laser (3), and the buckles (123) comprise a first split body (1231), a second split body (1232) and a protruding part (1233), wherein the first split body (1231) is arranged in the housing (121) in a sliding mode, one end of the first spring (122) is connected with the inner wall of the housing (121), the other end of the first spring is connected with the first split body (1231), one end of the second split body (1232) is perpendicularly connected with the first split body (1231), one end, far away from the laser (3), of the housing (121) is provided with an open end, the second split body (1232) penetrates through the open end, the protruding portion (1233) is fixedly connected to one end, far away from the first split body (1231), of the second split body (1232), the protruding portion (1233) penetrates through the clamping groove (11) together, the protruding portion (1233) is abutted to one side, far away from the housing (121), of the vertical plate (10), and the second split body (1232) is abutted to the inner periphery of the clamping groove (11).

4. The electric circular saw of claim 1, wherein: straightening mechanism (30) include movable rod (4), movable rod (4) rotate to set up at base plate (9) front end, base plate (9) front end is equipped with second spring (17) that are used for holding down movable rod (4), movable rod (4) and circular saw piece (1) coplane.

5. The electric circular saw of claim 4, wherein: the utility model discloses a portable electronic device, including base plate (9), movable rod (4), connecting piece (16) are connected on base plate (9) through connecting piece (16), connecting piece (16) include connecting rod (162) and threaded sleeve (161), connecting rod (162) are articulated with base plate (9) front end, the one end that base plate (9) were kept away from in connecting rod (162) and movable rod (4) are close to one end of base plate (9) all are equipped with threaded sleeve (161) assorted screw thread, threaded sleeve (161) are close to the one end of base plate (9) and the one end threaded connection of keeping away from base plate (9) with connecting rod (162), the other end with movable rod (4) are close to the one end threaded connection of base plate (9), second spring (17) one end is connected with one side that base plate (9) deviate from casing (5), the other end with connecting rod (162) are connected.

6. The electric circular saw of claim 1, wherein: and a plurality of groups of rollers (13) are arranged on one side of the substrate (9) departing from the shell (5).

7. The electric circular saw of claim 1, wherein: casing (5) internal slipping is provided with and is used for covering protective housing (14) in the circular saw blade (1) outside, spout (7) have been seted up along the internal periphery in casing (5) inboard, protective housing (14) outside is connected with slider (8) along the external peripheral edges, slider (8) and spout (7) sliding fit, the outside and casing (5) inboard of protective housing (14) are provided with locating part (15) jointly, locating part (15) include first magnet (151) and second magnet (152), first magnet (151) are located on casing (5), second magnet (152) are located on protective housing (14), first magnet (151) are used for with second magnet (152) actuation.

8. The electric circular saw of claim 1, wherein: the shell (5) is provided with handles (6) on two sides of the circular saw blade (1).

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